import numpy as np
import matplotlib.pyplot as plt

x = np.linspace(-100, 100, 500)
# y1, y2 = np.sin(x), np.cos(x)
# y3 = np.log(x)
# y4 = np.log10(x)
y5 = x * np.sin(x) + 2 * np.cos(x)
# plt.plot(x, y1)
# plt.plot(x, y2)
# plt.plot(x, y3)
# plt.plot(x, y4)
plt.plot(x, y5)

plt.title('line chart')
plt.xlabel('x')
plt.ylabel('y')

plt.show()
